NSA leader Edward Snowden has stirred up a national election campaign in Germany, where US surveillance practices have sparked controversy. The World's host speaks with Constanze Stelzenmuller of the German Marshall Fund.

NSA leader Edward Snowden has stirred up a national election campaign in Germany, where US surveillance practices have sparked controversy. The World's host speaks with Constanze Stelzenmuller of the German Marshall Fund.

NSA leader Edward Snowden has stirred up a national election campaign in Germany, where US surveillance practices have sparked controversy. The World's host speaks with Constanze Stelzenmuller of the German Marshall Fund.